Key duplicating and recording machine.



H. D. BARRETTXD M. ALDRICH. KEY DUPLIGATING AND RECORDING MACHINE.

APPLICATION FILED AUG.28,1913. 3 5085 8330 Patented Feb. 10, 1914,

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Patented Feb. 10. 19M.

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l/VVE/VTOHJ HA'I'PRY D. BARRETT MAXWLL flLDH/Cf/ ATTORNEYS cairn srarnsre rain HARRY BENTON BARRETT AND MAXWELL ALDRICH, OF TUCSON, ARIZONA,ASSIGN- UFKQB OBS OF- ONE-HALF T0 FREDERICK C. TATUM AND TOM K. RICHEY,BOTH OF TUCSON,

ARIZGNA.

KEY IOUYLICATING AND RECORDING MACHINE.

Specification of Letters Patent.

Patented Feb. 10, 1914.

Application filed August 28, 1913. Serial No. 787,075.

1'0 all whom it may concern.-

Be it known that we, HARRY Dnnron BAP.- nn'rr and MAXWELL ALDRICILcitizens of Tucson county of Pima, and State of Arizona, have jointlyinvented certain new and useful Improvements in Key Duplicating andRecording Machines, of which the following is a specification.

Our invention relates to a machine for duplicating keys of variousmakes, which is provided with means enabling the opcrator to record theposition and dept-h of the wards or notches in any key and at any timethereafter reproduce or duplicate the key from the record. ()ur machineis particularly adapted for duplicating flat or corrugated keys of anyof the well known makes.

The object. of our invention is to produce a machine with which it ispossible to exactly duplicate a key either while the origi nal key is inthe locksmiths possession or at any time thereafterfrom a cipher recordmade from the original key which record may remain on tile with thelocksmith for safe keeping". This is an important consideration, in thatit frevpiently happens that the key or keys for a certain lock becomelost or mislaid. in which case the locksmith can readily duplicate thekey from the cipher-record ot the key he has on tile. Furthcriifore itwould be a simple matter oi precaution for one having, keys that areliable to require duplication to previously take thcui to a locksmithhaving one of our niachincs and have him make and file away cipherrecords ol. the keys so that duplicates thcrcot may be. obtained at anyfuture time.

A. further object is to so construct the machine that the records takentherefrom and dupli ate keys made upon the machine from such records.will be accurate and rcliable.

With these. objects iii-view our machine simple in construction andpositive in action. readily and reliably adjusted and contains few or noparts liable ur' become disarrangzcd or require careful attention.

As illustrative of our invention we have shown, in the accompanyingdrawings, one form of machine for carrying out the above objects.

Figure 1 shows a longitudinal section and partial elevation of ourmachinb; Fig. 2 is.

top plan mew; Fig. 3, shows parts ack of section line 33 of Fig. 2 andFig. 41 is a cross-secti0n on line H of Fig. 2.

In machines of this character a tile is usually used for cutting thewards or notches in the key and in the form of device shown, wepreferably employ a circular file 1 which is mounted upon a shaft 2 andrevolubly supported in bearings 3 and d which are secured to abase 5 inany suitable manner. The file or cutting wheel may be power driven inany suitable or preferred manner and is here shown as driven by a crank.The end of the shaft- 2 is fitted with a beveled gear 6 which mesheswith a similar beveled gear 7 secured to a transverse shaft 8 and isadapted to revolve in suitable bear ings 9 and 10 secured to the 5. Theforward end of the shaft. 8 is provided with a spur gear 1'1 which isadapted to mesh with a pinion 12 secured to a crank shaft 13 to whichthe crank handle 11 is secured in the usual or any prefcrredmanner. EX-tcndingr across the machine abovethe file wheel is located a rocker bar15 which may be of any preferred construction, but is pref erably tittednear the left end thereof, as

shown in Figs. 1 and 2, with a key holding.

cylinder 16 adapted to hold a key 17 or a key blank to be converted intoa key. ihe let't cud of the rocker bar beyond th holder is provided witha plunger 18 which is spring pressed by a spring 19 as indicated inFig.1. The portion 15 of the rocker bar carrying the spring plunger ispreferably hinged at 20 so that it may be swung upward to the positionindicated by dotted lines in Fig. 1 so that the key or key blank may bereadily inserted. As our machine is intended to duplicate keys ofvarious styles,

we have preferably shown the key holder 16 as reinovahly secured in theend of the rocker bar 15, so that key holders adapted to hold otherstyles of keys than the one shown in the drawings may be inserted. Thisis provided for by fitting the end of the rocker bar 15 wit-ha holeadapted to take the key holder cylinder 16 therein. a pin 21 beinginscrtcdthrough the rocker bar into the tube .16 and thereby holding thesame securely in place while in use.

In order that the key or key blank 17 may be properly positioned withrespect to the tile wheel 1, the rocker. bar 15 is longitudinallymovable and may be rocked in the plane of the key in order to determinethe depth of the wards in the key, the longitudinal motion of the rockerbar being necessary to position the key in accordance with the severalnotches or Wards therein andj also when reproducing corresponding words1 in a key blank. The rocker bar is provided with side bars 22 whichride on a pin i or su 'iporting rod 23, which is preferably mounted in abracket or brackets 24, secured to the base 5 of the machine. The rockerbar by this means is enabled to slide longi tudiually and rock over thebar 23 in the manner previously described. The left end of the rockerbar is preferably guided in a suitable manner as by the bracket 25 whichextends over the rocker barand assists in securing and guidingthe same.The rear end of the rocker bar may be guided by a similar slotted plateor bracket 26 which as shown is secured to supporting blocks 27 whichare secured to the base 5 of the machine and are adapted to support andguide some of the parts thereof.

It is desirable in duplicating keys to have the posit-ion of the wardsor notches accurately placed in conformity to the orig inal key and asthe position of the wards ma y vary slightly with reference to the keystep, we have provided special means for 'n-operly adjustingthe gagewhich is adaptl to determine the position of the wards. this purpose theright end of the rocker r 15 is preferably provided with a hole 28 whichis fitted a tubular gage 29 which is j ovided at 30 with a plurality ofholes spaced apart to correspond with the distance between the wards ofthe key. One end of the tube 29 is fitted with a. threaded plug 31 inwhich a screw or bolt 32 takes for the purpose of adjusting the positionof the gage tube 29 relative to the key or key hold-.

ing device in the opposite end of the rocker The screw 3:? is adapted tobe readily turned to adjust the gage by means of a urled head 33. Anadjustable pin 34 is tioned above the line of holes 30 in the 29 andadapted to enter the holes the rocker bar 15 when it is rocked to bringthe key or key blank into engagement with the tile wheel 1. The pin 34is preferably made adjustable up and down by threading the upper portionthereof and providing it with a knurled head 35 and lockout 36 forsecuring it in any adjusted position. The; pin 34! is held in propercooperative position by being passed through a threaded hole in a bar 37which is secured to-and supported on the top of the brackets 27 as shownin Figs. 1 and 2 of the drawingsl It will be seen that when the pin 34:enters the first hole 30 in the gage tube '29 the first notch or ward ofthe key should be accurately positioned over the file Wheel 1. and canthus be positioned by turning the screw in the proper direction. Thiswill give the position for the first ward and the spacing oi thesumremling holes in the gage tube 25) will accurately locate themic-eroding wards of the key.

As previously explained it is desirable to be able to duplicate a keywithout having the key to copy and our machin is adapted for thispurpose by providing the and ot' the tube 29 with a pin t whirl: isadapted to actuate a pointer 35 secured to a lu'acket 40 carried by therocker bar l .7 as shown in Fig. 1 of the drawings. A imii iioratingscale 41 is secured to the upper. end of the bracket 40 and is graduatedin any suitable manner so that the locksmith can readily determine theposition of the first ward. in a given key and make a record thereof andt'rom that record he enabled to duplicate it at any tiuiethereaftcr. Theposition of the pointer 39 on the scale 41 will readily determine thedistance between the ll1r-t hole 30 of the gage and the first ward ofthe key.

The next ini 'iortant nieasureineiit to be determined in duplicating anykey is the depth oi the wards in the key. in our machine this is readilyobtained by r ckiugthe rocker bar 15 and suitably nil-nearing orrecording the rocking motion a cording to the depth of the res nativewards of the key. For accurately indicating llllfi roeki-u motion andhence the depth of the wards. the right end of the rocker bar 15 isprovided with a plate or smooth surface t2 which is:

adapted to contact with a suitable rot-k arm I 43 extending from a rockshaft it. which. as indicated in the drawings. is located above theright end of the rocker bar 15 and pivotally mounted in bearings: 45HEfII L l t the supporting blocks Q7. The rock 't't -'ll is providedwith a depending crank arm 46 which, as indicated in Fig 2 and 1",. isconnected by means of a link 47 with a pointer 48 pivoted at 4%) in anysuitable manner. The pointer 48 is preferably mounted to move over ascale 50 carried by a bracket 51 secured to and extending: above thebase substantially as indicated in the drawings. The lower end of thisscale bra ket i: hown as provided with a bearing l)l1l('l\'tt .32 which,together with the scale bracket. forms a bearing support for the pivot'5) of the pointer 48. The pointer 48 is represented as counterbalancwlby the weights .73 secured thereto below the pivot point ill The pointeris preferably spring pressed toward the left as indicated in Fig. 2-3 ofthe drawings, so that the pull on the link t? will, through the rock arml6 and the rock shaft 44, keep the point of the rock arm 43 in contactwith the plate 42 on theend of the rocker bar 15. A spring 54 isprovided for thus purpose and when the rocker bar 15 is up out of usethe pointer would normally stand at the dotted position indicated inFig. 3 with the indicator opening 55 thereof at A.' It Will be mensescurately indicate the depth of the respective wards in the key or a keyblank while hemg cut. Thus it Will be readily apparent that thelocksmith may measure a key, bothv osition of the wards and the depth asto thereo and make a cipher record thereof which may be filed away and aduplicatev key can be readil made at any time thereafter by setting themachine or moving the pointers to the positions indicated by suchrecord. If desired, holes 56 may be placed in'the dial plate 51 oppositetheindicating characters 50 and a pin inserted therein adapted tocontact with a lug 57 projecting from the pointer 48 so as to positivelylimit the movement of said pointer. Such pin can readily be inserted andremoved from the holes 1n accordance with the record as to the dc th ofthe wards of any key being du licate t will readil be understood that wedo not wish to be limited tora particular construction and arrangementof the device as shown for various modifications in the specitic detailsof construction and arrangement may be made without departing from thespirit and scope of the invention.

lVe claim:

1. In a key duplicating and recording machine, the combination of meansfor obtain ing a record of a key to be duplicated, comi 2 prising gagesior determining and indicating the position and depth respectively ofthe wards of the he and means for cutting wards in a key blan inaccordance with the readings of said ages.

In a key dupilicating and recordin machine, the combination of means forholding a key to be duplicated, a gage for determining and indicatingthe position of the wards, a gage for-determining and indicating thedepth of the wards and means for cutting corresponding wards in a keyblank when placed in said key holding means.

3. In a key duplicating and recording machine, the combination of amovable mem-' ber provided with means for holding a key to beduplicated, means operatively connected with said member for determiningand indicating the position of the wards in said key, means cooperatin'with said member for determining and in ica'ting the depth of said wardsand means for cutting corresponding wards in. a key blank whensubstituted for the key in said key holding means,'

a, In a key duplicating and recording machine, the com'olnation of amovable men ber provided with key holding means, means for removablysecuring said key holder to said member to permit the substitution ofone key holder for another, an indicating gage carried by said memberand adapted to determine the position of the wards of a key placed insaid key holder, an indicating gage mounted adjacent to said movablemember and adapted to be actuated thereby to determine the depth of thewards and means for cutting wards in a key blank, placed in saidkey'holder, in accordance with the readings of said gages.

5. In a key duplicating and recording machine, the combination oi amovable memher provided with key holding means, means for supportingsaid member for reciprocation longitudinally and for rocking movement inthe plane of a key in saidkey holder,

an adjustable gage for positioning said mem ber longitudinally accordingto the wards of a key in said key holder,a gage for determining andindicating the rocking movement of said member according to the depth ofthey wards 111 said key and means for cutting corresponding Wards in akey blank placed

